There is a test firmware version (fw360_en_231109) that was just posted last night at
pocketbookreader.com in the
download section.
Again, it is only a TEST version but I found it fixed a problem I had with my books all having teeny tiny fonts after I installed the previous firmware (fw360_en_191109). If you do try out the latest firmware, BE SURE to read the PDF file included with the software.